// Copyright 2023 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#pragma once

#include <iterator>

namespace ext
{
/** \brief Returns collection of specified container-type.
     *    Retains stored value_type, constructs resulting collection using iterator range. */
template <template <typename...> class ResultCollection, typename Collection>
auto collection_cast(const Collection & collection)
{
    using value_type = typename Collection::value_type;

    return ResultCollection<value_type>(std::begin(collection), std::end(collection));
};

/** \brief Returns collection of specified type.
     *    Performs implicit conversion of between source and result value_type, if available and required. */
template <typename ResultCollection, typename Collection>
auto collection_cast(const Collection & collection)
{
    return ResultCollection(std::begin(collection), std::end(collection));
}
} // namespace ext
